CN220201077U - Elevator maintenance anti-falling rod - Google Patents
Elevator maintenance anti-falling rod Download PDFInfo
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- CN220201077U CN220201077U CN202321450982.5U CN202321450982U CN220201077U CN 220201077 U CN220201077 U CN 220201077U CN 202321450982 U CN202321450982 U CN 202321450982U CN 220201077 U CN220201077 U CN 220201077U
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- 238000012423 maintenance Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000002457 bidirectional effect Effects 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 5
- 230000008439 repair process Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an elevator maintenance anti-falling rod, which comprises a mounting box; the inside of the mounting box is rotationally connected with a unidirectional screw rod; the unidirectional screw rod is connected with a movable plate through threads; the top of the movable plate is connected with two first push rods in a sliding way; one end of each first push rod is provided with a first L-shaped clamping plate; the left side wall body and the right side wall body of the mounting box are provided with movable grooves; the top of the movable plate is provided with a first driving mechanism; the left side wall body and the right side wall body of the mounting box are provided with through grooves; a second push rod is slidably arranged in each through groove; one end of each second push rod is provided with a second L-shaped clamping plate; the second driving mechanism is arranged inside the mounting box. According to the elevator door, the two first L-shaped clamping plates and the two second L-shaped clamping plates are abutted to the walls on the two sides of the elevator door through the first driving mechanism and the second driving mechanism, and meanwhile, the two first L-shaped clamping plates are abutted to the inner wall of the elevator shaft through the unidirectional screw rod, so that the whole elevator door is firmly fixed at an elevator door opening, and the stability of the elevator door is improved.
Description
Technical Field
The utility model relates to the technical field of elevator maintenance, in particular to an elevator maintenance anti-falling rod.
Background
Along with the continuous development of science and technology, the elevator and an elevator control system are also developed in a long-term manner, the elevator brings convenience for resident life, along with the wide application of the elevator in resident life, the maintenance, repair and troubleshooting work of the elevator also need to be perfected along with the development of the elevator, when the elevator is maintained and repaired, workers often need to enter an elevator shaft to perform construction, and when the elevator is repaired, safety ropes need to be fixed on anti-falling rods arranged at an elevator door.
The Chinese patent of the utility model with the bulletin number of CN216190155U discloses an elevator maintenance anti-falling rod, a first sleeve and a second sleeve are fixedly connected at the left end and the right end of a connecting column, a first screw rod is connected inside the first sleeve and the second sleeve in a threaded manner, one end of the first screw rod, which is far away from the first sleeve, is movably connected with a swivel, one end of the swivel, which is far away from the first screw rod, is fixedly connected with a supporting rod, the upper surface of the supporting rod is movably connected with a limiting rod, and the upper surfaces of the first sleeve and the second sleeve are fixedly connected with a fixing rod. According to the utility model, the third sleeve and the second adjusting nut are arranged to fasten the limiting rod secondarily, so that the phenomenon of loosening is avoided, the tightness of the device is improved, the protruding blocks and the rotating posts are arranged to avoid direct friction between the safety rope and the edge angle of the ground edge, the damage to the safety rope is reduced, the supporting rod and the limiting rod are arranged to tightly attach the elevator door frame, the contact area between the supporting rod and the elevator door frame is increased, and the stability of the device is improved.
However, the above patent can prevent the falling prevention rod from moving when in use to a certain extent by pushing the limit rod and the support rod against the elevator door frame, so that the stability of the device is improved, but the falling prevention rod is not completely fixed, and the problem of insufficient stability still exists.
Disclosure of Invention
In view of the above, the utility model provides an elevator maintenance anti-falling rod, which aims to solve the problems in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
an elevator service fall arrest lever comprising: a mounting box; the inside of the installation box is rotationally connected with a unidirectional screw rod; the unidirectional screw rod is connected with a movable plate through threads; the top of the movable plate is connected with two first push rods which are symmetrically arranged left and right in a sliding manner; one end of each first push rod far away from the center of the movable plate extends to the outside of the installation box and is provided with a first L-shaped clamping plate; the left side wall body and the right side wall body of the mounting box are respectively provided with a movable groove for the first push rod to move; the top of the movable plate is provided with a first driving mechanism for driving the two first push rods to move; the left side wall body and the right side wall body of the mounting box are respectively provided with a through groove; a second push rod is slidably arranged in each through groove; a second L-shaped clamping plate is arranged at one end of each second push rod, which is far away from the center of the installation box; the second driving mechanism for driving the two second push rods to move is arranged in the installation box; the top of the mounting box is provided with a mounting seat; the top of the mounting seat is provided with a fixing ring.
Preferably, two brackets which are symmetrically arranged left and right are arranged on the outer wall of the front side of the installation box; a rotating shaft is arranged between the two brackets; the rotating shaft is provided with a guide roller.
Preferably, a chute is formed in each bracket; a sliding block is arranged in each sliding groove in a sliding manner; the front side of each sliding block is connected with a spring; the other end of each spring is connected to the inner wall of the corresponding chute; a connecting rod is arranged between the two sliding blocks; the connecting rod is provided with a pinch roller; the compaction roller is arranged in front of the guide roller; a guide groove matched with the connecting rod is formed in one side, close to the compaction roller, of each support; each guide groove is communicated with the corresponding sliding groove.
Preferably, the first driving mechanism comprises a first bidirectional screw rod, two vertical plates, two first sliding sleeves and two first linkage rods; the two vertical plates are symmetrically arranged at the top of the movable plate in a left-right mode; the first bidirectional screw rod is rotationally connected between the two vertical plates; one end, close to the movable groove, of the first bidirectional screw rod penetrates through the movable groove and extends to the outside of the installation box; the two first sliding sleeves are respectively connected to the left side and the right side of the first bidirectional screw rod in a threaded manner; each first sliding sleeve is hinged with a first linkage rod; the other end of each first linkage rod is hinged to the corresponding first push rod.
Preferably, two first fixing seats are symmetrically arranged on the left side and the right side of the top of the movable plate; a first push rod groove penetrating through the first fixing seats is formed in each first fixing seat; each first push rod is slidably arranged in the corresponding first push rod groove.
Preferably, the second driving mechanism comprises a second bidirectional screw rod, two second sliding sleeves and two second linkage rods; the second bidirectional screw rod is rotatably connected to the left and right side wall bodies of the mounting box, and one end of the second bidirectional screw rod extends to the outside of the mounting box; the two second sliding sleeves are respectively connected with the left side and the right side of the second bidirectional screw rod in a threaded manner; each second sliding sleeve is hinged with a second linkage rod; the other end of each second linkage rod is hinged to the corresponding second push rod.
Preferably, two second fixing seats which are symmetrically arranged left and right are arranged on the bottom wall of the inside of the installation box; a second push rod groove penetrating through the second fixing seats is formed in each second fixing seat; each second push rod is slidably arranged in the corresponding second push rod groove.
Preferably, an LED lamp and a camera are arranged on the outer wall of the front side of the mounting box.
Preferably, the first L-shaped clamping plate and the second L-shaped clamping plate are both provided with anti-slip pads.
Compared with the prior art, the utility model has the following technical effects:
according to the elevator door, the two second L-shaped clamping plates are mutually separated and abutted to the two side walls of the elevator door through the second driving mechanism, the two first L-shaped clamping plates are mutually separated and abutted to the two side walls of the elevator door through the first driving mechanism, meanwhile, the two second L-shaped clamping plates are abutted to the outer wall of the front side of the elevator door, and the two first L-shaped clamping plates are abutted to the inner wall of the elevator shaft through rotating the unidirectional screw rod, so that the whole elevator door is firmly fixed at an elevator door opening, and the stability of the elevator door is effectively improved.
Drawings
Fig. 1 is a cross-sectional view of an elevator service fall arrest lever of the present utility model;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is a side view of an elevator service fall arrest lever of the present utility model;
in the figure: 1. a mounting box; 2. a unidirectional screw rod; 3. a movable plate; 4. a first push rod; 5. a first L-shaped clamping plate; 6. a movable groove; 7. a second push rod; 8. a second L-shaped clamping plate; 9. a mounting base; 10. a fixing ring; 11. a bracket; 12. a rotating shaft; 13. a guide roller; 14. a chute; 15. a slide block; 16. a spring; 17. a connecting rod; 18. a pinch roller; 19. a guide groove; 20. a first bidirectional screw rod; 21. a riser; 22. a first sliding sleeve; 23. a first linkage rod; 24. a first fixing seat; 25. an LED lamp; 26. a second bidirectional screw rod; 27. the second sliding sleeve; 28. a second linkage rod; 29. the second fixing seat; 30. a camera; 31. an anti-slip pad; 32. a first handle; 33. a second handle; 34. and a third handle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-3, the utility model discloses an elevator maintenance anti-falling rod, comprising: a mounting box 1; the inside of the mounting box 1 is rotationally connected with a unidirectional screw rod 2; one end of the unidirectional screw rod 2 is rotationally connected to the middle position of the inner wall of the front side of the mounting box 1, and the other end of the unidirectional screw rod 2 is rotationally connected to the middle position of the inner wall of the rear side of the mounting box 1; the unidirectional screw rod 2 is connected with a movable plate 3 through threads; the movable plate 3 is arranged in the mounting box 1 in a sliding way; the top of the movable plate 3 is connected with two first push rods 4 which are symmetrically arranged left and right in a sliding way; one end of each first push rod 4 far away from the center of the movable plate 3 extends to the outside of the installation box 1 and is provided with a first L-shaped clamping plate 5; the left and right side wall bodies of the mounting box 1 are provided with movable grooves 6 for the first push rod 4 to reciprocate back and forth; the top of the movable plate 3 is provided with a first driving mechanism for driving the two first push rods 4 to move oppositely or reversely; the left side wall body and the right side wall body of the mounting box 1 are provided with through grooves; a second push rod 7 is slidably arranged in each through groove; a second L-shaped clamping plate 8 is arranged at one end of each second push rod 7, which is far away from the center of the mounting box 1; a second driving mechanism for driving the two second push rods 7 to move towards or away from each other is arranged in the mounting box 1; the movable plate 3 is arranged at the front side of the second push rod 7; a mounting seat 9 is arranged at the middle position of the top of the mounting box 1; the top of the mounting seat 9 is provided with a fixing ring 10 for fixing the safety rope; when carrying out elevator maintenance, place the elevator gate with the device, make two second L type cardboard 8 butt on elevator door outside wall, drive two second L type cardboard 8 and move in opposite directions through second actuating mechanism, make two second L type cardboard 8 keep away from each other and butt in elevator door's both sides wall, drive two first L type cardboard 5 and move in opposite directions through first actuating mechanism, make two first L type cardboard 5 keep away from each other and butt in elevator door's both sides wall, simultaneously drive fly leaf 3 through rotating unidirectional screw 2 and remove backward, fly leaf 3 drives two first L type cardboard 5 and remove backward, make two first L type cardboard 5 butt in elevator shaft inner wall, thereby firmly fix whole device at the elevator gate, and then can effectively improve the stability of device, fix safety rope one end on solid fixed ring 10, place the safety rope other end in the elevator shaft, maintenance personnel get into the elevator shaft along the safety rope and maintain the elevator can.
In the present embodiment, two brackets 11 are provided on the outer wall of the front side of the mounting case 1; the two brackets 11 are symmetrically arranged along the center line of the installation box 1; a rotating shaft 12 is arranged between the two brackets 11; the two ends of the rotating shaft 12 are respectively connected to the two brackets 11 in a rotating way; the rotating shaft 12 is provided with a guide roller 13; when carrying out elevator maintenance, fix safety rope one end on solid fixed ring 10, walk around guide roll 13 with the safety rope other end and place in the elevator shaft, can avoid the safety rope to take place the friction with the inside edge of elevator shaft to can prolong safety rope life, reduce the potential safety hazard.
In the present embodiment, a chute 14 is formed inside each bracket 11; a sliding block 15 is slidably arranged in each sliding groove 14; the front side of each sliding block 15 is fixedly connected with a spring 16; the other end of each spring 16 is fixedly connected to the inner wall of the corresponding chute 14; a connecting rod 17 is arranged between the two sliding blocks 15; the connecting rod 17 is rotatably sleeved with a pinch roller 18; the pinch roller 18 is arranged between the two brackets 11; the pinch roller 18 is arranged right in front of the guide roller 13; a guide groove 19 matched with the connecting rod 17 is formed in one side of each bracket 11 close to the compaction roller 18; each guide groove 19 is communicated with the corresponding chute 14; when the elevator maintenance is carried out, the pinch roller 18 is pushed forward, so that the pinch roller 18 is far away from the guide roller 13, the other end of the safety rope is placed in the elevator shaft after passing through between the pinch roller 18 and the guide roller 13, then the pinch roller 18 is loosened, under the action of restoring force of the spring 16, the spring 16 drives the sliding block 15 to move backwards, the sliding block 15 drives the connecting rod 17 to move backwards, the connecting rod 17 drives the pinch roller 18 to move backwards, the pinch roller 18 returns to the original position, and the safety rope is limited between the pinch roller 18 and the guide roller 13, so that potential safety hazards are further reduced.
In the present embodiment, both the guide roller 13 and the pinch roller 18 are provided in a dumbbell-like structure.
In the present embodiment, a telescopic rod is penetrated inside each spring 16; one end of each telescopic rod is fixedly connected to the front side of the corresponding sliding block 15, and the other end of each telescopic rod is fixedly connected to the inner wall of the corresponding sliding groove 14.
In this embodiment, the first driving mechanism includes a first bidirectional screw 20, two risers 21, two first sliding sleeves 22, and two first linkage rods 23; the two vertical plates 21 are symmetrically arranged on the front side of the top of the movable plate 3; the first bidirectional screw rod 20 is rotatably connected between two vertical plates 21; one end of the first bidirectional screw rod 20, which is close to the movable groove 6, passes through the movable groove 6 and extends to the outside of the mounting box 1; the two first sliding sleeves 22 are respectively connected to the left side and the right side of the first bidirectional screw rod 20 in a threaded manner; a first linkage rod 23 is hinged on the rear side wall of each first sliding sleeve 22; the other end of each first linkage rod 23 is hinged to one end, close to the center of the movable plate 3, of the corresponding first push rod 4; when the two-way screw rod 20 is used, the two first sliding sleeves 22 are driven to move in opposite directions or in opposite directions by rotating the two-way screw rod 20, the two first sliding sleeves 22 respectively drive the two first push rods 4 to move in opposite directions or in opposite directions by the two first push rods 4, and the two first L-shaped clamping plates 5 are driven to move in opposite directions or in opposite directions by the two first push rods 4, so that the two first L-shaped clamping plates 5 are close to or far away from each other.
In this embodiment, the end of the first bidirectional screw rod 20 extending out of the mounting box 1 is provided with a first handle 32, which is convenient for operation.
In this embodiment, two first fixing seats 24 are symmetrically arranged on the left and right sides of the top of the movable plate 3; a first push rod groove penetrating through the first fixing seat 24 is formed in each first fixing seat 24; each first push rod 4 is slidably arranged in the corresponding first push rod groove.
In this embodiment, the second driving mechanism includes a second bidirectional screw rod 26, two second sliding sleeves 27, and two second linkage rods 28; the second bidirectional screw rod 26 is rotatably connected to the left and right side wall bodies of the mounting box 1, and one end of the second bidirectional screw rod 26 extends to the outside of the mounting box 1; the two second sliding sleeves 27 are respectively connected with the left side and the right side of the second bidirectional screw rod 26 in a threaded manner; a second linkage rod 28 is hinged on the front side wall of each second sliding sleeve 27; the other end of each second linkage rod 28 is hinged to one end of the corresponding second push rod 7, which is close to the center line of the mounting box 1; when the two-way sliding sleeve type hydraulic machine is used, the two second sliding sleeves 27 are driven to move in opposite directions or in opposite directions by rotating the second bidirectional screw rod 26, the two second sliding sleeves 27 respectively drive the two second push rods 7 to move in opposite directions or in opposite directions by the two second linkage rods 28, and the two second push rods 7 drive the two second L-shaped clamping plates 8 to move in opposite directions or in opposite directions, so that the two second L-shaped clamping plates 8 are mutually close to or far away from each other.
In this embodiment, the end of the second bidirectional screw rod 26 extending outside the mounting case 1 is provided with a second handle 33, which is convenient for operation.
In the embodiment, the rear end of the unidirectional screw rod 2 extends out of the outer wall of the mounting box 1 and is provided with a third handle 34, so that the operation is convenient.
In this embodiment, two second fixing seats 29 are provided on the inner bottom wall of the mounting case 1; the two second fixing seats 29 are symmetrically arranged along the center line of the installation box 1; a second push rod groove penetrating through the second fixing seat 29 is formed in each second fixing seat 29; each second push rod 7 is slidably arranged in the corresponding second push rod groove and is used for improving the stability of the moving process of the second L-shaped clamping plate 8.
In this embodiment, the LED lamp 25 is provided on the outer wall of the front side of the mounting box 1, so that maintenance personnel can be illuminated.
In this embodiment, be provided with camera 30 on the mounting box 1 front side outer wall, be provided with in the mounting box 1 with camera 30 electricity be connected processing module and communication module, conveniently with the image information that camera 30 took through processing module transmission to monitoring facilities (such as cell-phone, computer etc.) on the processing module processing back, make things convenient for real-time supervision maintainer's condition in the elevator shaft.
In this embodiment, the first L-shaped clamping plate 5 and the second L-shaped clamping plate 8 are provided with anti-slip pads 31 on the sides close to the elevator door wall.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the technical scope of the present utility model, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (9)
1. An elevator maintenance anti-falling rod, comprising: a mounting box (1); the inside of the installation box (1) is rotationally connected with a unidirectional screw rod (2); a movable plate (3) is connected to the unidirectional screw rod (2) through threads; the top of the movable plate (3) is connected with two first push rods (4) which are symmetrically arranged left and right in a sliding manner; one end of each first push rod (4) far away from the center of the movable plate (3) extends to the outside of the installation box (1) and is provided with a first L-shaped clamping plate (5); the left side wall and the right side wall of the installation box (1) are provided with movable grooves (6) for the first push rod (4) to move; the top of the movable plate (3) is provided with a first driving mechanism for driving the two first push rods (4) to move; the left side wall body and the right side wall body of the installation box (1) are provided with through grooves; a second push rod (7) is slidably arranged in each through groove; one end of each second push rod (7) far away from the center of the installation box (1) is provided with a second L-shaped clamping plate (8); the second driving mechanism for driving the two second push rods (7) to move is arranged in the installation box (1); the top of the mounting box (1) is provided with a mounting seat (9); the top of the mounting seat (9) is provided with a fixing ring (10).
2. The elevator maintenance anti-falling rod according to claim 1, characterized in that two brackets (11) symmetrically arranged left and right are arranged on the outer wall of the front side of the installation box (1); a rotating shaft (12) is arranged between the two brackets (11); the rotating shaft (12) is provided with a guide roller (13).
3. The elevator maintenance anti-falling rod according to claim 2, characterized in that a chute (14) is arranged inside each bracket (11); a sliding block (15) is slidably arranged in each sliding groove (14); the front side of each sliding block (15) is connected with a spring (16); the other end of each spring (16) is connected to the inner wall of the corresponding chute (14); a connecting rod (17) is arranged between the two sliding blocks (15); a pinch roller (18) is arranged on the connecting rod (17); the compaction roller (18) is arranged in front of the guide roller (13); a guide groove (19) matched with the connecting rod (17) is formed in one side of each bracket (11) close to the compaction roller (18); each guide groove (19) is communicated with the corresponding sliding groove (14).
4. The elevator repair fall protection bar according to claim 1, characterized in that the first drive mechanism comprises a first bidirectional screw (20), two risers (21), two first sliding sleeves (22) and two first linkage bars (23); the two vertical plates (21) are symmetrically arranged at the top of the movable plate (3) in a left-right mode; the first bidirectional screw rod (20) is rotatably connected between the two vertical plates (21); one end of the first bidirectional screw rod (20) close to the movable groove (6) penetrates through the movable groove (6) and extends to the outside of the installation box (1); the two first sliding sleeves (22) are respectively connected to the left side and the right side of the first bidirectional screw rod (20) in a threaded manner; each first sliding sleeve (22) is hinged with a first linkage rod (23); the other end of each first linkage rod (23) is hinged to the corresponding first push rod (4).
5. The elevator maintenance anti-falling rod according to claim 4, wherein two first fixing seats (24) are symmetrically arranged on the left side and the right side of the top of the movable plate (3); a first push rod groove penetrating through the first fixing seats (24) is formed in each first fixing seat (24); each first push rod (4) is slidably arranged in the corresponding first push rod groove.
6. The elevator service fall arrest lever according to claim 1, characterized in that the second drive mechanism comprises a second bidirectional screw (26), two second sliding sleeves (27) and two second linkage rods (28); the second bidirectional screw rod (26) is rotatably connected to the left and right side wall bodies of the installation box (1), and one end of the second bidirectional screw rod (26) extends to the outside of the installation box (1); the two second sliding sleeves (27) are respectively connected to the left side and the right side of the second bidirectional screw rod (26) in a threaded manner; each second sliding sleeve (27) is hinged with a second linkage rod (28); the other end of each second linkage rod (28) is hinged to the corresponding second push rod (7).
7. The elevator maintenance anti-falling rod according to claim 6, wherein two second fixing seats (29) which are symmetrically arranged on the left and right are arranged on the bottom wall of the inside of the installation box (1); a second push rod groove penetrating through the second fixing seat (29) is formed in each second fixing seat (29); each second push rod (7) is arranged in the corresponding second push rod groove in a sliding mode.
8. The elevator maintenance anti-falling rod according to claim 1, characterized in that the outer wall of the front side of the installation box (1) is provided with an LED lamp (25) and a camera (30).
9. The elevator maintenance anti-falling rod according to claim 1, characterized in that the first L-shaped clamping plate (5) and the second L-shaped clamping plate (8) are provided with anti-slip pads (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450982.5U CN220201077U (en) | 2023-06-08 | 2023-06-08 | Elevator maintenance anti-falling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321450982.5U CN220201077U (en) | 2023-06-08 | 2023-06-08 | Elevator maintenance anti-falling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220201077U true CN220201077U (en) | 2023-12-19 |
Family
ID=89154733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321450982.5U Active CN220201077U (en) | 2023-06-08 | 2023-06-08 | Elevator maintenance anti-falling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220201077U (en) |
-
2023
- 2023-06-08 CN CN202321450982.5U patent/CN220201077U/en active Active
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